This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A155968 #33 Feb 03 2025 09:53:53 %S A155968 5,7,2,3,6,4,9,4,2,9,2,4,7,0,0,0,8,7,0,7,1,7,1,3,6,7,5,6,7,6,5,2,9,3, %T A155968 5,5,8,2,3,6,4,7,4,0,6,4,5,7,6,5,5,7,8,5,7,5,6,8,1,1,5,3,5,7,3,6,0,6, %U A155968 8,8,8,4,9,4,2,4,1,3,0,3,9,8,9,1,8,1,1,6,3,5,1,3,7,7,4,4,8,5,3,8,5,1,0,0,4 %N A155968 Decimal expansion of (1/2)*log(Pi). %C A155968 This sequence is also the decimal expansion of the logarithm of the Gamma-function at 1/2. - _Iaroslav V. Blagouchine_, Mar 20 2015 %H A155968 G. C. Greubel, <a href="/A155968/b155968.txt">Table of n, a(n) for n = 0..5000</a> %F A155968 Equals A053510/2 = log(A002161) = A131659/4. %e A155968 0.572364942924700087071713675676529355823... %p A155968 evalf(log(Pi)/2); %t A155968 RealDigits[Log[Pi]/2,10,120][[1]] (* _Harvey P. Dale_, May 31 2015 *) %o A155968 (PARI) log(gamma(1/2)) \\ or \\ log(Pi)/2 \\ _G. C. Greubel_, Jan 16 2017 %Y A155968 Cf. A053510. %K A155968 cons,easy,nonn %O A155968 0,1 %A A155968 _R. J. Mathar_, Jan 31 2009